Pulp beating or breaking machine



Patented Mar. 16, tgig.

UNITI-:o STATES lettera rariazrrr omen.

WILMER c. s'rALEY, or TIrrnoANoncrTY, omo.

PULP BEATING Ot BREAKING- MACHINE.

Application filed vNovember 20, 1924. Serial' No. 750,988.

T0 all whom 'it may concern clare the following to be al full, clear,andy exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being, had to the accompanying drawings, and to cl'iaractersof reference marked thereon, which form a part of this speciication.

This invention relates, generally, to improveniente in pulp beating orbreaking machines commonly employed in the paper making industry; andthe invention has ref,- erence, more particularly, to Va lnovelconstruction and arrangement of pulp beating or breaking machine inwhich the backfall is subject'to adjustment.

The invention has for its principaly object to provide, in connectionwith av pulp beating or breaking engine or machine, a novel arrangementand construction of backfall having means for producing desired verticaladjustment thereof, whereby the height and position of the backfallrelative to the beater roll may be selectivelyy determined, so that thesame may be adjusted to the best point to take full advantage of thecentrifugal action of the roll, to the end that the speed of circulationof the pulp by the mechanisin may be regulated to the most efficientdegree, and a maximumspeed of. circulation commensurate with efficientpulp beating action be attained. A f

Other objects of this invention, not at this time more particularlyenumerated, will be clearly understood from the following detaileddescription of the same.

The invention consists, primarily, in the `novel construction of beateror breaker havr ing an adjustable backfall as hereinafter set forth;and, the invention consists, furthermore, in the novel arrangements andcombinations of the various .devices and parts, as well as in thedetails of the construction of said parts, all of which will behereinafter-more fully described, and then i'inally embodied in theappended claims.

The invention is clearly illustrated in the accoi'npanying drawings, inwhich Figure lis fragmentary vertical longitudinal` section of a portionof a beating or breaking engine or machine, illustrating theconstructionV and arrangement of the novel adjustable backfall, madeaccording to" and embodyinga the principles of this invention;

and Figure 2 is a fragmentary transverse section through the saine,taken on line 2f-2V in said Figure/1. l

Similar characters of reference are ems ployed in all of the hereinabovedescribed views, to indicate corresponding parts.

Referring now to said drawings, the refer'- ence' character 8indicates-the usual Ybeater, trough or tub in which the beater mechanismis mounted, and in which the raw material to be. pulped, and the waterfor softening the same and assisting its circulation around the tubl ortrough to the beater. roll, is received. Arranged within the troughor'tub is the usual mid-feather which terminates short of each end ofthe trough or tub', yand which serves to properly divide the interior ofthe latter tol provide the usual continuous circulatory passage therein.vMounted on a suitably journaled transverse drive shaft 5,L so as to bedisposed intermediate one side wall and the mid-feather 4, is the usualbeater roll 6. Saidbeater roll is provided, around its circumference,witha'plurality of radially projecting,- fly-bars 7. Arranged beneathsaidl beater rollfis a suitable baseplate 8 provided with upwardlyprojecting stationary or plate knives 9 with which the fiy--bars 7 ofthe beater roll cooperate in teasing or beating out the pulp. v

Extending upwardly and Vforwardly from the base-plate 8,and'substantially concentric t0 the forward quarter of the underside ofysaid beater roll, is a stationary apronframe l() disposedtransverselyintermediate one side of the-trough' or tub 3 and its midfeather 4. Spaced forwardly from the 11pper free end of sai-dapron-frame 10 is a stationary bridge-plate 11, which also eX- tendstransversely between one side'of thc trough `0r tub 3 and itsmid-feather 4, in

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inclined backfall flange, internally threaded means connected with saidbackfall member, screw means engaged with said internail).T threadedmeans, and means for rotating' said screw means in either direetion toraise and lower said backfall member as may be desired, comprising atransverse rotatable shaft, and a Worm and gear transmission meansintermediate said transverse shaft and said screw means.

In testimony that I claim the invention set forth above I have hereuntoset my hand this 13th day of November 1924.

VVILMER C. STALEY.V

